-static void tx4939ide_tf_read(ide_drive_t *drive, struct ide_cmd *cmd)
-{
- ide_hwif_t *hwif = drive->hwif;
- struct ide_io_ports *io_ports = &hwif->io_ports;
- struct ide_taskfile *tf = &cmd->tf;
-
- if (cmd->ftf_flags & IDE_FTFLAG_IN_DATA) {
- u16 data;
-
- /* no endian swap */
- data = __raw_readw((void __iomem *)io_ports->data_addr);
- tf->data = data & 0xff;
- tf->hob_data = (data >> 8) & 0xff;
- }
-
- /* be sure we're looking at the low order bits */
- tx4939ide_outb(ATA_DEVCTL_OBS, io_ports->ctl_addr);
-
- if (cmd->tf_flags & IDE_TFLAG_IN_ERROR)
- tf->error = tx4939ide_inb(io_ports->feature_addr);
- if (cmd->tf_flags & IDE_TFLAG_IN_NSECT)
- tf->nsect = tx4939ide_inb(io_ports->nsect_addr);
- if (cmd->tf_flags & IDE_TFLAG_IN_LBAL)
- tf->lbal = tx4939ide_inb(io_ports->lbal_addr);
- if (cmd->tf_flags & IDE_TFLAG_IN_LBAM)
- tf->lbam = tx4939ide_inb(io_ports->lbam_addr);
- if (cmd->tf_flags & IDE_TFLAG_IN_LBAH)
- tf->lbah = tx4939ide_inb(io_ports->lbah_addr);
- if (cmd->tf_flags & IDE_TFLAG_IN_DEVICE)
- tf->device = tx4939ide_inb(io_ports->device_addr);
-
- if (cmd->tf_flags & IDE_TFLAG_LBA48) {
- tx4939ide_outb(ATA_HOB | ATA_DEVCTL_OBS, io_ports->ctl_addr);
-
- if (cmd->tf_flags & IDE_TFLAG_IN_HOB_ERROR)
- tf->hob_error = tx4939ide_inb(io_ports->feature_addr);
- if (cmd->tf_flags & IDE_TFLAG_IN_HOB_NSECT)
- tf->hob_nsect = tx4939ide_inb(io_ports->nsect_addr);
- if (cmd->tf_flags & IDE_TFLAG_IN_HOB_LBAL)
- tf->hob_lbal = tx4939ide_inb(io_ports->lbal_addr);
- if (cmd->tf_flags & IDE_TFLAG_IN_HOB_LBAM)
- tf->hob_lbam = tx4939ide_inb(io_ports->lbam_addr);
- if (cmd->tf_flags & IDE_TFLAG_IN_HOB_LBAH)
- tf->hob_lbah = tx4939ide_inb(io_ports->lbah_addr);
- }
-}